Surveillance of Rocky Mountain spotted fever, United States, 1981-1983
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The increase in the incidence of RMSF observed in the 1970s appears to have plateaued at a median of 0.49 cases/100,000 for the 6-year period 1978-1983. In 1981-1983, for the first time, Oklahoma had the highest incidence of RMSF in the United States (4.10 cas... ...
